✅ add new user settings and server checks

spiderweb/main.py

@@ -69,6 +69,8 @@ class SpiderwebRouter(LocalServerMixin, MiddlewareMixin, RoutesMixin, FernetMixi
         csrf_trusted_origins: Sequence[str] = None,
         db: Optional[Database] = None,
         debug: bool = False,
+        gzip_compression_level: int = 6,
+        gzip_minimum_response_length: int = 500,
         templates_dirs: Sequence[str] = None,
         middleware: Sequence[str] = None,
         append_slash: bool = False,
@@ -119,6 +121,9 @@ class SpiderwebRouter(LocalServerMixin, MiddlewareMixin, RoutesMixin, FernetMixi
             convert_url_to_regex(i) for i in self._csrf_trusted_origins
         ]
 
+        self.gzip_compression_level = gzip_compression_level
+        self.gzip_minimum_response_length = gzip_minimum_response_length
+
         self.debug = debug
 
         self.extra_data = kwargs

spiderweb/middleware/gzip.py

@@ -1,16 +1,41 @@
 """
 Source code inspiration: https://github.com/colour-science/flask-compress/blob/master/flask_compress/flask_compress.py
 """
-
+from spiderweb.exceptions import ConfigError
 from spiderweb.middleware import SpiderwebMiddleware
+from spiderweb.server_checks import ServerCheck
 from spiderweb.request import Request
 from spiderweb.response import HttpResponse
 
 import gzip
 
 
+class CheckValidGzipCompressionLevel(ServerCheck):
+    INVALID_GZIP_COMPRESSION_LEVEL = (
+        "`gzip_compression_level` must be an integer between 1 and 9."
+    )
+
+    def check(self):
+        if not isinstance(self.server.gzip_compression_level, int):
+            raise ConfigError(self.INVALID_GZIP_COMPRESSION_LEVEL)
+        if self.server.gzip_compression_level not in range(1, 10):
+            raise ConfigError("Gzip compression level must be an integer between 1 and 9.")
+
+
+class CheckValidGzipMinimumLength(ServerCheck):
+    INVALID_GZIP_MINIMUM_LENGTH = "`gzip_minimum_length` must be a positive integer."
+
+    def check(self):
+        if not isinstance(self.server.gzip_minimum_length, int):
+            raise ConfigError(self.INVALID_GZIP_MINIMUM_LENGTH)
+        if self.server.gzip_minimum_length < 1:
+            raise ConfigError(self.INVALID_GZIP_MINIMUM_LENGTH)
+
+
 class GzipMiddleware(SpiderwebMiddleware):
 
+    checks = [CheckValidGzipCompressionLevel, CheckValidGzipMinimumLength]
+
     algorithm = "gzip"
     minimum_length = 500
 
@@ -37,4 +62,4 @@ class GzipMiddleware(SpiderwebMiddleware):
         response.headers["Content-Encoding"] = self.algorithm
         response.headers["Content-Length"] = str(len(zipped))
 
-        return zipped.decode("UTF-8")
+        return zipped